Coupling



Sept. 20, i932.

H. A. CEDERSTROM COUPLING 'Filed March 25. 1931 Patented Sept. 20, 1932bmi-Ensures Parser critics HAROLD A. CEDERSTROM,OF MINNEAPOLIS,MINNESOTA, ASSIG-NOR, BY ASSIGN'- i MENTS, TO THE BOSCO MANUFACTURINGCOMPANY, F MINNEAPOLIS, MINNESOTA,

A CORPORATION OF MINNESOTA courLING Applcation'led March 23, 1931.Serial No. 524,474.

rlhis invention relates to couplings for quickly connecting anddisconnecting a vpair of conduits, which conduits may be either a pairof flexible hoses, a pairof pipes or one hose and one pipe. Y

It isthe main object of the present inven-y tion to provide a couplingfor connecting a pair of conduits, which is of cheap and simpleconstruction and can be operated with a minimum of e'ort to quicklyconnect and disconnect the conduits.

A further obj ect of the-invention is to provide such a couplingincluding a pair of mating coupling members, oneof'which will re-.'ceive the abrasive wear due to continued usage and is ofstandard.constructionso that when it becomes worn, it can be replaced bya similar new coupling member securablefromthe nearest hardware'dealer.Hitherto, although various types of quick attaching and releasingcouplings have been provided, most ofv these couplings include couplingmembers of special construction, which can only be re placed as theybecome worn `by similar coupling members procured from the particularmanufacturer of the complete coupling- Delays have been occasionedthrough the inability to quickly obtain new coupling mem'- bers ofspecial construction as the old coupling membersbecome worn. Thecoupling of the present invention is designed `tofeliminate thenecessity for use of coupling ymembers of special construction. j

The objects and advantages of the present invention will more fullyappear from the following description made in connection with theaccompanying drawing, wherein like reference characters refer to thesame .or similar parts throughout the various views, and in which,

Fig. l is a plan View of the coupling of the pres-ent invention used toconnect a hose to a pipe, certain of the parts being broken away, andhaving certain'portions thereof shown in horizontalsection to moreclearly illustrate the constructionthereof;` y i Fig. 2 is a View inside elevation of the structureV shown in Fig. 1,'thevmovable partsbeingshown in full lines in the nostions they will assume when thehoseiscoupled to the pipe'and being shown in dotted lines'inthe positions theywill assume' when the hose is released from the pipe; and

Fig. 3 is a plan view villustrating a cap that may be applied over oneof the coupling members to in use. y Y

Referring to the drawing, vthere isillustrated a portion of a pipe lhaving exterior screw threads formed at its end. A hoseV 5 is also shownand a'nipple 6 isiconnected to the end of the hose 5 in theusual manner,as bv being received within the end of the hose protect the seat of thesame whenl not and held in place by means of coiled wire 7. Y

The nipple 6 has Aexterior screw threads its free end. A pair of Ymatingcoupling members 8 and 9 are provided and these `coupling members may beof any desired construction. f

One of the coupling members 8 or 9 will'be applied to the end of thepipe Ll; while the other coupling member will beapplied to the nipple 6.In the drawing, the coupling mem.- ber V8l is shown` as being screwedonto the end of the pipe 4 and thiscoupling member forms a femalecoupling member of a common type of union Vsold byv practically allhardware stores vin the country. The coupling member 8 has apolygonalexterior surface to receive a wrench and the polygonal surface joins anexterior flange at the end of the coupling member. The inner portion ofthe end vofthe coupling member is rabbeted and carries a ring 8a formedpreferably of soft metal, such as copper-or the like and providing aseat for a male'coupling member. A `male'coupling member 9 is screwedonto the end of the nipple 6V vand preferably this male coupling memberis provided with. a circular exterior v surface joining anexteriorvflange adjacent the end of the member'. The usual maleportionis provided at the extreme end of the member 9 for cooperation with theringSa of the female coupling member8. Prefer-v ably a groove 9a is cutin the exterior surface ofthe circular member 9.. v Y .-7

Y In `accordance withthe present invention, there is provided a ringlOwhich looselyrlits over V- the coupling member 9 and bears portion ofthe coupling against the exterior flange of the coupling member. Thering is adapted for rotation on the coupling member and be retained onthe coupling member by means of a screw 27 carrying a-jamb nut 12 andhaving an inner end adapted to fit within the groove 9a. The ring 10carries a pair of outwardlypro- Vjecting pins 11 at diametricallyopposite points thereof.

A yoke 13 preferably consisting of a pair of spaced rings interconnectedby short bars, is provided and this yoke is applied to the pipe 4 behindthe coupling member 8. Preferably the rear ring of theyoke is ofslightly points on the rear ring of the yoke 13.

greater internal diameter than thereXterior diameter of pipe 4, so thatit will readily slip` over the pipe while the internal diameter of theforward ring of the yoke is the same diameter as the external diameterofthe pipe 4,

' `and this forward ringis provided Awith screw threads permitting theyoke to bel screwed onto the screw threaded end 'portionof the pipe andlocked against the rear end of the couplingmember 8.Q1The forward ringof the yoke 13 carries a pair of pivot pins 14-at`diametricallyfopposite points and on these .pins 14 are mounted thearms 15 of an actu;

ating lever designat'edvbythe letter'A 'as an entirety. vrThetwo arms 15of the lever are of substantially angular shape andfare joined at theirupper ends by'a nutted bolt 16 projecting through a spacing collar 17between the-two arms. The lower ends' of the arms 15'are forked andtheforkedportions-"carry short pivots 18v on which the forward ends oflinks 19 are pivoted.V The rear ends vof Vthelinks 19 arepivotally'mounted on diatwo hook members22 have slots 22a in theirmedial portions through which the pins 14 project to permit of slidingmovement of the hook members relative to the pins'14. Adjacent theirrear ends, thehook members have shorter slots 22?) formed therein and'attheir eXtreme rear ends', the hook membersv are equipped with inturnedapertured and screw threaded lugs 24 within which screws 25Vare mounted.l' The screws 25 bear againstfthe rear side of the ring 21 and 4maybelocked in adjusted position' by means of jamb nuts 26. The operation ofthe coupling isprobably vobviousfrom the above description,`but maybe'briefly explained as follows k After the various parts of thecoupling havebeen mounted onla pair of conduits, such as the pipe 4 andhose 5, the hook portions of the hook member 22 will be engaged with thevpins 11 and the lever A will be swung downwardly untilthe arms 15 ofthe lever strike the pins 11 as stops. In this position,the

pivots 18 will be disposed slightly past dead center relation relativeto .lines taken through the axes ofthe pins 20, 14 and 11. The screws 25will then be adjusted in the lugs 24 to fmove the hook'members 22rearwardly relaswung downwardly out'of substantially dead centerrelationrelative to lines taken through the pins 20,14 and 11 and .thering 21 will be slid forwardly on the pipe 4 to release the `hookmembers 22 from engagementwith the pins 11. This will of course permitVthe coupling 'member'9'to be released from engagement with the couplingmember 8 and the hose 5 together with parts attached thereto, may beremoved from the vicinity Vof the pipe 4. When it-is Vdesired to againcouple the hose ytothevpipe, the hook portions of the hook members 22need only be engaged with the pins 11 and lever A swung downwardly tothe fullV line position illustrated.r` It will be seen that the hosemaybe very quickly coupled'and uncoupled from 'the pipe; Due to the factthatthe ring 10 may rotate on the coupling member 9, perfect alinementofthe pins 11 with thepins 14 `and pins 2O can always be obtainedwithout twistingthe hose V5 or the pipe 4. As either'of. the couplingmembers', 8 or 9 become worn, through con` tinued usage, the screws 25may be taken up slightly to adjust for this wear.

VWhen the ring 8a forming the seat for thetwo coupling members 8 and 9becomes pitted'or worn to such an extent-that the twocouplingmembers'can not be properly en# gaged without leakage of thefluid passing through the pipe 4 and hose 5, the coupling member 8v maybe quickly removed from the pipe 4 and readily replaced by a stockfemale coupling member obtained at the nearest hardware dealer. The'length of the coupling member usedto replace the old coupling membermakes no materialdiEerence dueto the fact that proper adjustment forcoupling members 8 ofd'erent lengths may be made through theprovision-of the screws 25v and slots 225 and 22a in the ho'ok'members22. The particular position of the yoke 13 on the pipe 4 makes nomaterial difference because of this adjustable feature of the coupling.Although the coupling member 9 illustrated is not what is known as avstandard male coupling member7 due to the provision of the circular'instead of polygonaleXteriorsurface of will be seen that a-standardmalecoupling Vmember having the usual polygonal-shaped surface to receive awrench and not equipped with a groove 9a, could be easily substitutedfor the coupling member 9 shown. There is no necessity, however, formaking the coupling member 9 of standard construction inasmuch as thecoupling member applied to the conduit carrying the yoke 13 will bedesigned to take the wear between the two coupling members as byinclusion in this coupling member of a ring 8a of soft metal, yas shown,and this coupling member, whether a female coupling member or a malecoupling member, may be of standard construction of a type readilyaccessible and on the market. The coupling members 8 and 9 may be of anydesired type and either one of the coupling members may be applied toeither conduit.

In order that the coupling member 8 may be protected when the couplingmember 9 is not attached thereto, a cap 28 illustrated in Fig. 3 isprovided, and this cap may be equipped with a gasket 29 of soft materialsuch as rubber, which will iit against the ring 8a of the couplingmember 8 to shield the same from grit and other material that mightinjure the seat formed by the ring. The cap 28 is equipped withdiametrically opposed lugs 28a carrying pins 30 which serve a similarfunction to the pins l1 of the ring 10. The gasket 29 may be removablysecured to the cap 28 as by a screw 31.

The coupling is being extensively used for quickly coupling oil hoses tooil pipes and the invention has been amply and successivelydemonstrated. The coupling can of course be used Vwherever desired forcoupling any two conduits together, or for coupling two rods or shaftstogether.

It will, of course, be understood that va rions changes may be made inthe form, details, arrangement and proportions of the various partswithout departing from the scope of the present invention, which,generally stated, consists in the matter shown and described and setforth in the appended claims.

What is claimed is l. The combination of a pair of conduits, a pair ofcooperating coupling members mounted respectively on opposing ends ofsaid conduits, a pivot member applied to one of said conduits rearwardlyfrom the coupling member thereon, a substantially U-shaped lever havingarms pivoted to opposite sides of said pivot member, links pivotallyconnected to the ends of said arms, a ring mounted on the saidconduitrearwardly from said pivot member, said links being pivotallyconnected to said ring, hook members having hook portions at theirforward ends and having portions at their rear ends bearing against therear side of said ring and means on the other lof said conduits withwhich said hook portions are adapted to'be engaged.

2. The structure defined in claim 1,1the

portions at the rear ends of said hook mem-- bers including lugsrearwardly disposed from said ring and screws mountedin saidv lugs foradjustment and bearing against said ring. i l

3. The combination of a pair of conduits,

mating coupling members respectively. se-v cured to opposing ends'ofsaidlconduits, a pivot member applied to one of said conduits rearwardlyfrom the coupling member thereon, a l.lever of substantially U-shapehaving arms pivotally connected to opposite sides of said pivot member,links pivotally connected to saidVv arms,a ring mounted on said conduitrearwardly from saidy pivot member and having pivotal connectionwithsaid links, hook members having rear portions bearing against said ringandY having hooks formed attheir Vforward portions, means for guidingsaid hook `members for sliding'movement longitudinally of said conp duitand means carried by the lother of said conduits with whichV said hooksarev adapted to be engaged.

4. The structure defined in` claim 3, said last mentionedmeansbeing-mountedifor rotation on the conduit'towhich it is applied topermit ready attachment of said hooks .Y

thereto without twisting either of said conduits.

5. The structure defined in claim 3,- saidV last mentioned meansincluding a pair of diametrically opposed pins receiving said Y hooksand acting as stops to limit the swinging movement of said lever in onedirection.

6. rlhe combinationl of a first conduit, a second conduit, a pair `of-mating coupling members appliedrespectively to opposing ends of saidconduits, a yoke memberV mounted on said rst conduit behind the couplingmember thereon, diametrically opposed pinscarried by said'yoke member,an operating lever of substantially. U-shape having arms pivotallymounted on said pins,

links pivoted on the free ends of said arms,

a ring encircling said rst conduit rearwardly from said yoke member,Vdiametrically opposed p ins carried lby said ring and onwhich saidlinksare pivoted, hook-members having slots extending longitudinally on saidsecond conduit and with Vwhich said hooks are adapted to be engaged,said last mentionedpins acting as stops with which said arms of saidoperating lever are adapted to engage to limit'swinging movement of saidoperating lever in one direction .at a point Ywhere the pivotsconnecting said arms with said links are disposed slightly past deadcenter relation relative to lines takenftlirough the aires of said firstmentioned'pand second mentioned pins.

7 The combination of a first conduit, a second conduit, mating couplingmembers screwed on the opposed ends of saidrespective conduits, a .yokemember ,screwedV on Ysaid first conduit behind the coupling memberthereon, diametrically opposed pins 'carried by said ryokefmember, alever having said arms, a ring encompassing said first conbe. manuallyor substantially automatically flipped to obtain said particular angularrelationship regardless of Awhat may be the angular relationship betweenthe said conduit 'terminal portions.

` Inftestimony whereof I affix my signature. v

`HAROLD A.. CEDERSTRVOM. f

Varms pivoted on said pins, links pivoted toV duit rearwardly fronisaidyokevmember and i slidable longitudinally relative to said firstconduit,'diametrically opposed pins carried by said ring. and to whichsaid links are pivotally connected,`hook members having longitudinallyextending' slots f therein through which said first mentionedand saidsecond mentioned pins extend, ksaid hook members having inturned" lugsrearwardly disposed' from said ring, adjustablescrews mounted in saidlugsv and bearing against said ring, saidhook lmembers having hooks attheir forward ends, said yoke members forming guides for slidingmovement of said hook y'member and diametrically opposed means carriedby said coupling member on said second conduit with .which said hookslimiting forward swinging movement of said are adapted tobe engaged andacting as stops lever.

8. The combination of a vpair of conduits,

a pair of cooperating coupling members mounted Vrespectivelyon :opposingends of said conduits, a pivot member applied to one of said conduits,an operating lever pivotally Y mounted on said pivot member, linkspivotally connected to said lever, hooks pivotally connected to saidlinks and vprojecting towards the remaining conduit upon v,which said ofconduits having terminal portions designed to be coupled incommunicationwith each other, a

coupling mechanism comprising a pair of 'Y ccmplemental devicesl mountedrespectively on said terminal. portions, said devices embodyingindividual clamping meansthat are interengageable. only when disposed`in a Y particularangular relationship, and. one of said clamping meansbeing freelyV rotatable in a given locus about the aXis of itscorresponding conduit terminal, whereby it may

